Tuya WiFi Door Sensor Smart Door Open / Closed Detectors Smartlife APP Wifi Window Sensor WorkFeature:1.Receive Real-time Alarms Remotely:when door/window is opened or closed, the sensor will push instant notification to your smartphone immediately. so you don't have to worry about your baby going out of house without notice, will easily know when your aged parents leave or arrive home and even can be clear when someone enters your home,shop,office ,etc.2.No hub required: This smart home door and window sensor system works with your home Wi-Fino hub required! Simply download the Smart life app, mount your sensors with the included adhesive or screws, and connect.3.Compatibility: The Somaita Door and Window Sensors are only compatible with 2.4GHz Wi-Fi networks. The sensors easily install in any entryway and the wireless design offers flexible placement options.4.Control from anywhere: Using your home Wi-Fi, you can set up automated actions with other TUYA Smart Home products such as automatically powering on the lights when a door is opened.5.Long-Lasting Performance: The Somaita Door and Window Sensors are battery-powered for a long-lasting performance. You can put your mind at easy knowing that the battery provides continuous operation for up to 1-years.6.Easy-InstallNo complicated installation tools required. The sensor can be installed with double-sided tape or screws (included) in just a few steps, and download an app "tuya" or "Smart Life" from GooglePlay or App Store to check the status of your door / window.Specification:Inp